Sliding-door lock



(Modem 0. E. LEGG, 0. G. ALEXANDER & G. W. LBGG.

SLIDING DOOR LOCK.

No. 439,163. Patented Oot. 28, 1-890.

Winesses:

UNITED STATES PATENT OFFICE.

CORNELIUS E. LEGG, OLIVER G. ALEXANDER, AND GEORGE IV. LEGG, OF

- DUNKERTON, IOWA.

SLIDING-DOOR LOCK.

SPECIFICATION forming part of Letters Patent No. 439,163, dated October 28, 1890.

Application filed December 24, 1889. Serial No. 334,886, (Model) To all whom, it may concern:

Be it known that we, OoRNELIUs E. LEGG, OLIVER G. ALEXANDER, and GEORGE W. LEGG, citizens of the United States, residing at Dunkerton, in the county of Blackhawk and State of Iowa, have invented certain new and useful Improvements in Gate and Door Latches; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention has relation to improvements in gate and door latches; and it consists in the construction, novel combination, and adaptation of parts, hereinafter described and claimed, and illustrated in the accompanying drawings, forming part of this application, in which- Figure 1 is a front elevation of a door-jamb and sliding door, showing our improved latch complete in position thereon; and Fig. 2 is a perspective view of the several parts separated.

Referring to said drawings by letter, D indicates the base-plate of a casing, in which is pivoted the gravitating locking-lever and its pressure-spring, presently to be described. This base-plate D, which is provided with ears having screw-openings, is attached to the side of the sliding door adjacent to the inner end thereof, and the said plate is furthermore provided at its end adjacent to the end of door with a vertical rectangular opening b for the passage of the inwardly-directed handpieces of the gravitating-lever, a corresponding opening for a similar purpose being cut in the .door at that point.

0 indicates the cap-plate of the casing, in which the gravitating-lever is secured. This boxing or casing O, which is open at its end adjacent to the inner end of the door and has its top plate cut away at that point for the play of the outwardly-directed lateral handpiece of the lever, is provided upon the inner edge of its side walls wit-h outwardly-directed flanges (I, having screw-openings so arranged as to coincide with the screw-openings of the base-plate D, to which the cap-plate is attached by screws or bolts.

The vertical wall of the casing O is provided at suitable points upon its inner side with inwardly-directed pivotstuds F and G, which are formed integral with or fixed in said casing.

B in dicates the improved gravitating latchlever, which is provided at its inner end with an annular opening for the reception of the stud G, upon which it is pivoted. This latchlever B is furthermore provided at an intermediate point in its length with two lateral hand-pieces H and I, the piece I, extending through opening b in door, provides a means whereby the lever-latch bar maybe actuated from the inside, while the other lateral piece H provides a convenient medium for actuating the lever from the outside. The said lever B extends a sufficient distance forwardly from its casing, and is provided at its end with a cam-shaped point J, immediately back of which recesses K are out in the edges of the bar to seat the staple of the keeper-plate, presently to be described.

At a point upon the lever B, immediately back of the recesses or notches K, I form an outwardly-extending staple L, arranged at right angles to said latch-lever, adapted to receive the arm of a look when it is desired to lock the door.

E indicates a pressure-spring, consisting of a coil and two tangentially-extending arms. This spring E, the coil of which is pivoted on the stud F of the casing, is so arranged, as shown, that one of its arms will bear against the top wall of the casing, while its other arm will bear against the top edge of the lever B, serving to keep the same normally depressed.

From the foregoing description, taken in connection with the annexed drawings, the operation of our invention will be obvious. It will be seen that by sliding the door forwardly the latch-lever will ride into the staple of the keeper and automatically engage the same, bringing the eye L at a point coincident with the staple or loop of the keeper, so that they may receive a lock, such as shown.

Having described our invention, what We claim is The combination, with a door-jamb, of a loop-keeper secured thereto, a slidingdoor,

slotted as described, a lock-casing having its forward end recessed and secured to the door so as to expose the slot, the cap-plate D, having a slot 7), corresponding with the slot in the door, and the latch-bolt having one end pivoted within the casing and its opposite end beveled to enter the keeper, and also having notches K on its opposite edges, an eye L on its outer side, so as to coincide with the eye for the entrance of the latch-bolt in the keeper, and also having arms H and I,

one of which passes through the slot of the casing and also the slot in the door, substantially as specified.

In testimony whereof We affix our signatures I 5 in presence of two witnesses.

CORNELIUS E. LEGG. OLIVER G. ALEXANDER. GEORGE XV. LEGG. Witnesses:

J. T. TEDFORD, H. W. BUOHER. 

